diff --git a/htdocs/product/composition/card.php b/htdocs/product/composition/card.php
index 2167f15a7e5..70f14f9edf5 100644
--- a/htdocs/product/composition/card.php
+++ b/htdocs/product/composition/card.php
@@ -2,7 +2,7 @@
 /* Copyright (C) 2001-2007  Rodolphe Quiedeville    <rodolphe@quiedeville.org>
  * Copyright (C) 2004-2017  Laurent Destailleur     <eldy@users.sourceforge.net>
  * Copyright (C) 2005       Eric Seigne             <eric.seigne@ryxeo.com>
- * Copyright (C) 2005-2012  Regis Houssin           <regis.houssin@capnetworks.com>
+ * Copyright (C) 2005-2018  Regis Houssin           <regis.houssin@capnetworks.com>
  * Copyright (C) 2006       Andre Cianfarani        <acianfa@free.fr>
  * Copyright (C) 2011-2014  Juanjo Menent           <jmenent@2byte.es>
  * Copyright (C) 2015       Raphaël Doursenaud      <rdoursenaud@gpcsolutions.fr>
@@ -342,6 +342,7 @@ if ($id > 0 || ! empty($ref))
 
 			$class='pair';
 
+			$totalsell=0;
 			if (count($prods_arbo))
 			{
 				foreach($prods_arbo as $value)
@@ -369,11 +370,16 @@ if ($id > 0 || ! empty($ref))
 						}
 						print '</td>';
 
-					    $totalline=price2num($value['nb'] * ($product_fourn->fourn_unitprice * (1 - $product_fourn->fourn_remise_percent/100) - $product_fourn->fourn_remise), 'MT');
+						// For avoid a non-numeric value
+						$fourn_unitprice = (!empty($product_fourn->fourn_unitprice)?$product_fourn->fourn_unitprice:0);
+						$fourn_remise_percent = (!empty($product_fourn->fourn_remise_percent)?$product_fourn->fourn_remise_percent:0);
+						$fourn_remise = (!empty($product_fourn->fourn_remise)?$product_fourn->fourn_remise:0);
+
+						$totalline=price2num($value['nb'] * ($fourn_unitprice * (1 - $fourn_remise_percent/100) - $fourn_remise), 'MT');
 						$total+=$totalline;
 
 						print '<td align="right">';
-						print ($notdefined?'':($value['nb']> 1 ? $value['nb'].'x' : '').price($product_fourn->fourn_unitprice,'','',0,0,-1,$conf->currency));
+						print ($notdefined?'':($value['nb']> 1 ? $value['nb'].'x' : '').price($fourn_unitprice,'','',0,0,-1,$conf->currency));
 						print '</td>';
 
 						// Best selling price
@@ -382,10 +388,15 @@ if ($id > 0 || ! empty($ref))
 						{
 							$pricesell='Variable';
 						}
-						$totallinesell=price2num($value['nb'] * ($pricesell), 'MT');
-						$totalsell+=$totallinesell;
+						else
+						{
+							$totallinesell=price2num($value['nb'] * ($pricesell), 'MT');
+							$totalsell+=$totallinesell;
+						}
 						print '<td align="right" colspan="2">';
-						print ($notdefined?'':($value['nb']> 1 ? $value['nb'].'x' : '').price($pricesell,'','',0,0,-1,$conf->currency));
+						print ($notdefined?'':($value['nb']> 1 ? $value['nb'].'x' : '');
+						if (is_numeric($pricesell)) print price($pricesell,'','',0,0,-1,$conf->currency));
+						else print $langs->trans($pricesell);
 						print '</td>';
 
 						// Stock
diff --git a/htdocs/product/reassort.php b/htdocs/product/reassort.php
index 4bade1db2cf..959f2377d9d 100644
--- a/htdocs/product/reassort.php
+++ b/htdocs/product/reassort.php
@@ -1,7 +1,7 @@
 <?php
 /* Copyright (C) 2001-2006  Rodolphe Quiedeville    <rodolphe@quiedeville.org>
  * Copyright (C) 2004-2015  Laurent Destailleur     <eldy@users.sourceforge.net>
- * Copyright (C) 2005-2012  Regis Houssin           <regis.houssin@capnetworks.com>
+ * Copyright (C) 2005-2018  Regis Houssin           <regis.houssin@capnetworks.com>
  * Copyright (C) 2013       Cédric Salvador         <csalvador@gpcsolutions.fr>
  * Copyright (C) 2015       Raphaël Doursenaud      <rdoursenaud@gpcsolutions.fr>
  *
@@ -57,6 +57,7 @@ $page = GETPOST("page",'int');
 if (! $sortfield) $sortfield="p.ref";
 if (! $sortorder) $sortorder="ASC";
 $limit = GETPOST('limit','int')?GETPOST('limit','int'):$conf->liste_limit;
+if (empty($page) || $page == -1) { $page = 0; }     // If $page is not defined, or '' or -1
 $offset = $limit * $page ;
 
 // Load sale and categ filters
diff --git a/htdocs/product/reassortlot.php b/htdocs/product/reassortlot.php
index 7b82408cfc0..b4d14ef1231 100644
--- a/htdocs/product/reassortlot.php
+++ b/htdocs/product/reassortlot.php
@@ -1,7 +1,7 @@
 <?php
 /* Copyright (C) 2001-2006  Rodolphe Quiedeville    <rodolphe@quiedeville.org>
  * Copyright (C) 2004-2016  Laurent Destailleur     <eldy@users.sourceforge.net>
- * Copyright (C) 2005-2012  Regis Houssin           <regis.houssin@capnetworks.com>
+ * Copyright (C) 2005-2018  Regis Houssin           <regis.houssin@capnetworks.com>
  * Copyright (C) 2013       Cédric Salvador         <csalvador@gpcsolutions.fr>
  * Copyright (C) 2015       Raphaël Doursenaud      <rdoursenaud@gpcsolutions.fr>
  * Copyright (C) 2016       Ferran Marcet			<fmarcet@2byte.es>
@@ -61,6 +61,7 @@ $page = GETPOST("page",'int');
 if (! $sortfield) $sortfield="p.ref";
 if (! $sortorder) $sortorder="ASC";
 $limit = GETPOST('limit','int')?GETPOST('limit','int'):$conf->liste_limit;
+if (empty($page) || $page == -1) { $page = 0; }     // If $page is not defined, or '' or -1
 $offset = $limit * $page ;
 
 // Load sale and categ filters
diff --git a/htdocs/product/traduction.php b/htdocs/product/traduction.php
index e8900d51bb4..c96e1c0f025 100644
--- a/htdocs/product/traduction.php
+++ b/htdocs/product/traduction.php
@@ -1,5 +1,5 @@
 <?php
-/* Copyright (C) 2005-2012 Regis Houssin        <regis.houssin@capnetworks.com>
+/* Copyright (C) 2005-2018 Regis Houssin        <regis.houssin@capnetworks.com>
  * Copyright (C) 2007      Rodolphe Quiedeville <rodolphe@quiedeville.org>
  * Copyright (C) 2010-2012 Destailleur Laurent <eldy@users.sourceforge.net>
  * Copyright (C) 2014 	   Henry Florian <florian.henry@open-concept.pro>
@@ -205,7 +205,7 @@ $linkback = '<a href="'.DOL_URL_ROOT.'/product/list.php?restore_lastsearch_value
 $shownav = 1;
 if ($user->societe_id && ! in_array('product', explode(',',$conf->global->MAIN_MODULES_FOR_EXTERNAL))) $shownav=0;
 
-dol_banner_tab($object, 'ref', $linkback, shownav, 'ref', '', '', '', 0, '', '', 1);
+dol_banner_tab($object, 'ref', $linkback, $shownav, 'ref', '', '', '', 0, '', '', 1);
 
 dol_fiche_end();